I can't believe this is still going on. Do you really have nothing else to do than troll this site? Gotta be honest, I'm tired of this, shouldn't have fed the troll in the first place, I'm going to answer you, and after that I'm done with this, I'm not answering anymore.
Where's the evidence that the human brain correlates 100% with 'gender?' There are studies that indicates possible differences, but this is not definitive. There are others which suggest that differences are overstated and that it's not possible to separate into male and female brains due to the significant overlap. There is certainly no reason to disband sex classes, which are based on their biological roles as sex partners.
You can look up those studies if you bother to try. There have been many attepmts to find out the cause of transgenderism through brain scans, and what pretty much all of those studies found, was that in areas of brain where there was clear difference between the sexes (number of neurons etc.), transwomen were within cisfemale norms, and transmen within cismale norms. There is also a shit ton of research on effect of hormones on brain development and creating brain differences (some endoctrinologists released a pretty interesting omnibus a few months ago, which pissed off your fellows over at GenderCritical to no end for some reason), as well as some research which found transwomen to possess altered androgen-receptor genes, which likely prevent a significant masculinization of the brain. All of this research is online, you can go take a look, in fact I strongly encourage you to do so.
There are anomalies, yes, but a woman is never born with no corresponding female traits, but with male ones. Transwomen are born as males with features which match the definition of male (male genitalia for example). This fact shows that sex is a term that is not a social construct. A transwoman is born into a body which can typically fulfill the biological 'role' of a male, therefore they are male.
Like I said, this isn't a definition of the female sex, it's a characteristic. I probably should have said practically 0%, but the point I was making is that transwomen do not have markers of the female sex, they do have that of the male sex though. This is certainly a characteristic more typical of sex than 'brain differences' and one more readily definable than that.
Except the fact that they, as I've been trying to explain to you ad nauseam, are born with one female trait, that is, their brain. And some of them have even more. Just as transmen are born with male brains. And some of them have even more. Just as most cis people are born with everything, and some with less. You are really funnily skipping over what I was saying. Sure, the percentage is small, but it is there. You can't just aknowledge it and then leave it behind. As I said before, transpeople are just such anomalies. So are intersex people. It is their cases where determining their sex gets fuzzy, since they, biologically, aren't 100% either.
Because it gets fuzzy in cases of such anomalies, we need to look at what is the common thread among them. And, as far as we know, that common thread seems to be them having female-sexed brains, which is probably the only really universal biological factor between them. No matter what internal system, or what chromosones they are born with, all transwomen seem to be born with female-sexed brains. Just like ciswomen. No matter what, the brain is always female. Once again, go check out some of the studies on similarities between the brains of transwomen and ciswomen, studies by endoctrinologists on effect of sex-specific hormones on brain development, studies on transwomen which found them to possess altered androgen-receptors which almost certainly prevent masculinization of the brain, thus almost certainly being the reason of them retaining female-sexed brain characteristics.
Hell, while you are at it, go check out the studies which found gays and lesbians brains, as well, to be consistently gender-atypical, with gays brains slightly resembling females', and lesbians' to slightly resemble males', though not even near transpeoples' level. That might at least finally show you that, yeah, brain-differences in brain sex are real.
Go read those studies and then come back.
Wait a second.
I just realized something. In talking about this topic, you have only given examples of studies which compared male and female brains. I'm not going to doubt those studies, and their results seem interesting. However, your mentioning of only them suggests you've never even looked at the studies I am referencing (studies specifically looking at similarities between cis-female and trans-female brains, and their differences from cis-male and trans-male brains). You certainly wouldn't be arguing the way you are if you had. You've never done serious research into this topic right? Yet, you think you know everything about it, right? Love people like you, there's a lot of such types in Breitbart's comment section. Doesn't mean I'm gonna waste anymore time trying to educate you about the topic you've obviously never bothered to thoroughly research. Sorry, but no. Once again, I'm posting this, and I'm done with you. If you want to have a serious discussion, educate yourself on the topic, and then come back.
I meant that females have female traits. An infertile woman is still a woman because she will have other female traits. It was probably poorly worded, but it should be obvious why an infertile woman is a woman and why a transwoman is not a woman despite having differences with the fertile woman. Transwomen are, by and large, born with male features, You've cited anomalies as an example that sex is not black and white, but the analogy doesn't really stand. A transwoman has to become a woman by transitioning, the intersex are born like that. My argument about what males and females are doesn't prohibit sex from being more complex. Anomalies mean that sex is more complex, true, but this doesn't mean that sex is meaningless. The existence of intersex doesn't change the biological fact that female and male denotes reproductive role. There may be cases which make reproduction impossible for male or female, but they still have the characteristics of their sex which would ordinarily allow them to fulfill such 'roles.' Transwomen born in male bodies don't and this is a more reliable marker for sexual differences than brains. There is a clearer distinction between what a man and woman is through this than brain differences.
How can somebody be so close, yet so far. Look, imagine sex binary as two massive areas, linked by a thin thread. In those two vast areas are all people who possess traits usually associated with the gender they identify with, people who can easily be identified as male or female, basically, 99+% of humanity. In that thin thread are all people in whose cases it gets fuzzy, foggy and unclear. This includes transpeople and intersex people. As it gets a little unclear in this area, we need to look closely at exactly what are the common links there. And so far what we can deduce, is that no matter what else they possess, they always seem to identify as the gender whose neurobiological sex characteristics they possess. That is the common link there, and as such, it can be ascertained that those are the only features truly crucial for people's gender identification. Therefore, meaning that those are the only ones truly worth looking at in such anomalous cases.
And by the way, transpeople are also born that way. You can't become trans, just like you can't become gay or lesbian.
Studies have indicated that there are a myriad of differences across brains which make commonalities between those of the same sex impossible. This doesn't mean there are an infinite number of sexes, it means that the brain is an unreliable marker for biological sex.
[citations needed]. I'd have thought such a groundbreaking discovery would have made the news and would have led to doctors prescribing brain scans to people to ensure that they can transition before they suffer from the worst of gender dysphoria.
Once again, it's obvious you haven't researched this issue specifically. Now, I don't doubt the results of those studies, however, they don't invalidate the results of the studies I've seen either. Now, neuroplasticity is a thing, I acknowledge that, however, there are some differences among sexes which are pretty much immutable and proven to be hormone-caused (white/grey matter structure, number of neurons in certain areas), differences in which transwomen cloud with ciswomen, and transmen with cismen. And in which, by the way, gays to approach females and lesbians males.
Once again, look at those issues specifically, because I can tell you haven't, then come back if you are still interested in debating. Because as it stands, we'd be just going on and on with the same, as we are obviously talking from vastly different perspectives (i.e. someone interested in this topic, and someone who hadn't ever bothered to look into it).
Agree with mandatory brain scans though. Numbers of transition regretters is pretty small (in the single digits), but it obviously exists, and this would easily put that to zero. So at least one thing we agree on.
There. I'm done. This took way more of my time than it should have, and for nothing. Can't argue with someone who knows nothing about the issue being debated. Maybe someone else will decide to try to explain this to you, but not me.